yy-menu
Version:
A traditional menu system for web apps inspired by Electron
189 lines (173 loc) • 24.6 kB
JavaScript
const html = require('./html');
const Config = require('./config');
const localAccelerator = require('./localAccelerator');
class MenuItem {
/**
* @param {object} options
* @param {string} [options.label] label for menu entry may include accelerator by placing & before letter)
* @param {string} [options.type] separator, checkbox, or undefined
* @param {object} [options.styles] additional CSS styles to apply to this MenuItem
* @param {string} [options.accelerator] see Accelerator for inputs (e.g., ctrl+shift+A)
* @param {MenuItem} [options.submenu] attaches a submenu (and changes type to submenu)
* @param {boolean} [options.checked] check the checkbox
*/
constructor(options) {
localAccelerator.init();
options = options || {};
this.styles = options.styles;
this.div = html();
this.type = options.type;
this.click = options.click;
if (this.type === 'separator') {
this.applyConfig(Config.SeparatorStyle);
} else {
this._checked = options.checked;
this.createChecked(options.checked);
this.text = options.label || ' ';
this.createShortcut();
this.createAccelerator(options.accelerator);
this.createSubmenu(options.submenu);
if (options.submenu) {
this.submenu = options.submenu;
this.submenu.applyConfig(Config.MenuStyle);
}
this.applyConfig(Config.RowStyle);
this.div.addEventListener('mousedown', e => this.handleClick(e));
this.div.addEventListener('touchstart', e => this.handleClick(e));
this.div.addEventListener('mouseenter', () => this.mouseenter());
this.div.addEventListener('mouseleave', () => this.mouseleave());
}
}
/**
* The click callback
* @callback MenuItem~ClickCallback
* @param {InputEvent} e
*/
mouseenter() {
if (!this.submenu || this.menu.showing !== this) {
this.div.style.backgroundColor = Config.SelectedBackgroundStyle;
if (this.submenu && (!this.menu.applicationMenu || this.menu.showing)) {
this.submenuTimeout = setTimeout(() => {
this.submenuTimeout = null;
this.submenu.show(this);
}, this.menu.applicationMenu ? 0 : Config.SubmenuOpenDelay);
}
}
}
mouseleave() {
if (!this.submenu || this.menu.showing !== this) {
if (this.submenuTimeout) {
clearTimeout(this.submenuTimeout);
this.submenuTimeout = null;
}
this.div.style.backgroundColor = 'transparent';
}
}
applyConfig(base) {
const styles = {};
for (let style in base) {
styles[style] = base[style];
}
if (this.styles) {
for (let style in this.styles) {
styles[style] = this.styles[style];
}
}
for (let style in styles) {
this.div.style[style] = styles[style];
}
}
createChecked(checked) {
this.check = html({ parent: this.div, html: checked ? '✔' : '' });
}
createShortcut() {
if (this.type !== 'separator') {
const text = this.text;
this.label = html({ parent: this.div });
let current = html({ parent: this.label, type: 'span' });
if (text.indexOf('&') !== -1) {
let i = 0;
do {
const letter = text[i];
if (letter === '&') {
i++;
this.shortcutSpan = html({ parent: this.label, type: 'span', html: text[i], styles: Config.AcceleratorKeyStyle });
current = html({ parent: this.label, type: 'span' });
} else {
current.innerHTML += letter;
}
i++;
} while (i < text.length);
} else {
this.label.innerHTML = text;
}
}
}
showShortcut() {
if (this.shortcutSpan) {
this.shortcutSpan.style.textDecoration = 'underline';
}
}
hideShortcut() {
if (this.shortcutSpan) {
this.shortcutSpan.style.textDecoration = 'none';
}
}
createAccelerator(accelerator) {
this.accelerator = html({ parent: this.div, html: accelerator ? localAccelerator.prettifyKey(accelerator) : '', styles: Config.AcceleratorStyle });
if (accelerator) {
localAccelerator.register(accelerator, e => this.click(e));
}
}
createSubmenu(submenu) {
this.arrow = html({ parent: this.div, html: submenu ? '►' : '' });
}
closeAll() {
let menu = this.menu;
localAccelerator.unregisterMenuShortcuts();
while (menu && !menu.applicationMenu) {
if (menu.showing) {
menu.showing.div.style.backgroundColor = 'transparent';
menu.showing = null;
}
menu.div.remove();
menu = menu.menu;
}
if (menu.showing) {
menu.showing.div.style.background = 'transparent';
menu.showing = null;
menu.hideAccelerators();
}
}
handleClick(e) {
if (this.submenu) {
if (this.submenuTimeout) {
clearTimeout(this.submenuTimeout);
this.submenuTimeout = null;
}
this.submenu.show(this);
this.div.style.backgroundColor = Config.SelectedBackgroundStyle;
if (typeof e.keyCode !== 'undefined' && this.menu.applicationMenu && document.activeElement !== this.menu.div) {
this.menu.div.focus();
}
e.preventDefault();
} else if (this.type === 'checkbox') {
this.checked = !this.checked;
this.closeAll();
} else {
this.closeAll();
}
if (this.click) {
this.click(e, this);
}
}
get checked() {
return this._checked;
}
set checked(value) {
this._checked = value;
this.check.innerHTML = this._checked ? '✔' : '';
}
}
module.exports = MenuItem;
//# 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html = require('./html')\r\nconst Config = require('./config')\r\nconst localAccelerator = require('./localAccelerator')\r\n\r\nclass MenuItem\r\n{\r\n    /**\r\n     * @param {object} options\r\n     * @param {string} [options.label] label for menu entry may include accelerator by placing & before letter)\r\n     * @param {string} [options.type] separator, checkbox, or undefined\r\n     * @param {object} [options.styles] additional CSS styles to apply to this MenuItem\r\n     * @param {string} [options.accelerator] see Accelerator for inputs (e.g., ctrl+shift+A)\r\n     * @param {MenuItem} [options.submenu] attaches a submenu (and changes type to submenu)\r\n     * @param {boolean} [options.checked] check the checkbox\r\n     */\r\n    constructor(options)\r\n    {\r\n        localAccelerator.init()\r\n        options = options || {}\r\n        this.styles = options.styles\r\n        this.div = html()\r\n        this.type = options.type\r\n        this.click = options.click\r\n        if (this.type === 'separator')\r\n        {\r\n            this.applyConfig(Config.SeparatorStyle)\r\n        }\r\n        else\r\n        {\r\n            this._checked = options.checked\r\n            this.createChecked(options.checked)\r\n            this.text = options.label || '&nbsp;&nbsp;&nbsp;'\r\n            this.createShortcut()\r\n            this.createAccelerator(options.accelerator)\r\n            this.createSubmenu(options.submenu)\r\n            if (options.submenu)\r\n            {\r\n                this.submenu = options.submenu\r\n                this.submenu.applyConfig(Config.MenuStyle)\r\n            }\r\n            this.applyConfig(Config.RowStyle)\r\n            this.div.addEventListener('mousedown', (e) => this.handleClick(e))\r\n            this.div.addEventListener('touchstart', (e) => this.handleClick(e))\r\n            this.div.addEventListener('mouseenter', () => this.mouseenter())\r\n            this.div.addEventListener('mouseleave', () => this.mouseleave())\r\n        }\r\n    }\r\n\r\n    /**\r\n     * The click callback\r\n     * @callback MenuItem~ClickCallback\r\n     * @param {InputEvent} e\r\n     */\r\n\r\n    mouseenter()\r\n    {\r\n        if (!this.submenu || this.menu.showing !== this )\r\n        {\r\n            this.div.style.backgroundColor = Config.SelectedBackgroundStyle\r\n            if (this.submenu && (!this.menu.applicationMenu || this.menu.showing))\r\n            {\r\n                this.submenuTimeout = setTimeout(() =>\r\n                {\r\n                    this.submenuTimeout = null\r\n                    this.submenu.show(this)\r\n                }, this.menu.applicationMenu ? 0 : Config.SubmenuOpenDelay)\r\n            }\r\n        }\r\n    }\r\n\r\n    mouseleave()\r\n    {\r\n        if (!this.submenu || this.menu.showing !== this)\r\n        {\r\n            if (this.submenuTimeout)\r\n            {\r\n                clearTimeout(this.submenuTimeout)\r\n                this.submenuTimeout = null\r\n            }\r\n            this.div.style.backgroundColor = 'transparent'\r\n        }\r\n    }\r\n\r\n    applyConfig(base)\r\n    {\r\n        const styles = {}\r\n        for (let style in base)\r\n        {\r\n            styles[style] = base[style]\r\n        }\r\n        if (this.styles)\r\n        {\r\n            for (let style in this.styles)\r\n            {\r\n                styles[style] = this.styles[style]\r\n            }\r\n        }\r\n        for (let style in styles)\r\n        {\r\n            this.div.style[style] = styles[style]\r\n        }\r\n    }\r\n\r\n    createChecked(checked)\r\n    {\r\n        this.check = html({ parent: this.div, html: checked ? '&#10004;' : '' })\r\n    }\r\n\r\n    createShortcut()\r\n    {\r\n        if (this.type !== 'separator')\r\n        {\r\n            const text = this.text\r\n            this.label = html({ parent: this.div })\r\n            let current = html({ parent: this.label, type: 'span' })\r\n            if (text.indexOf('&') !== -1)\r\n            {\r\n                let i = 0\r\n                do\r\n                {\r\n                    const letter = text[i]\r\n                    if (letter === '&')\r\n                    {\r\n                        i++\r\n                        this.shortcutSpan = html({ parent: this.label, type: 'span', html: text[i], styles: Config.AcceleratorKeyStyle })\r\n                        current = html({ parent: this.label, type: 'span' })\r\n                    }\r\n                    else\r\n                    {\r\n                        current.innerHTML += letter\r\n                    }\r\n                    i++\r\n                }\r\n                while (i < text.length)\r\n            }\r\n            else\r\n            {\r\n                this.label.innerHTML = text\r\n            }\r\n        }\r\n    }\r\n\r\n    showShortcut()\r\n    {\r\n        if (this.shortcutSpan)\r\n        {\r\n            this.shortcutSpan.style.textDecoration = 'underline'\r\n        }\r\n    }\r\n\r\n    hideShortcut()\r\n    {\r\n        if (this.shortcutSpan)\r\n        {\r\n            this.shortcutSpan.style.textDecoration = 'none'\r\n        }\r\n    }\r\n\r\n    createAccelerator(accelerator)\r\n    {\r\n        this.accelerator = html({ parent: this.div, html: accelerator ? localAccelerator.prettifyKey(accelerator) : '', styles: Config.AcceleratorStyle })\r\n        if (accelerator)\r\n        {\r\n            localAccelerator.register(accelerator, (e) => this.click(e))\r\n        }\r\n    }\r\n\r\n    createSubmenu(submenu)\r\n    {\r\n        this.arrow = html({ parent: this.div, html: submenu ? '&#9658;' : '' })\r\n    }\r\n\r\n    closeAll()\r\n    {\r\n        let menu = this.menu\r\n        localAccelerator.unregisterMenuShortcuts()\r\n        while (menu && !menu.applicationMenu)\r\n        {\r\n            if (menu.showing)\r\n            {\r\n                menu.showing.div.style.backgroundColor = 'transparent'\r\n                menu.showing = null\r\n            }\r\n            menu.div.remove()\r\n            menu = menu.menu\r\n        }\r\n        if (menu.showing)\r\n        {\r\n            menu.showing.div.style.background = 'transparent'\r\n            menu.showing = null\r\n            menu.hideAccelerators()\r\n        }\r\n    }\r\n\r\n    handleClick(e)\r\n    {\r\n        if (this.submenu)\r\n        {\r\n            if (this.submenuTimeout)\r\n            {\r\n                clearTimeout(this.submenuTimeout)\r\n                this.submenuTimeout = null\r\n            }\r\n            this.submenu.show(this)\r\n            this.div.style.backgroundColor = Config.SelectedBackgroundStyle\r\n            if (typeof e.keyCode !== 'undefined' && this.menu.applicationMenu && document.activeElement !== this.menu.div)\r\n            {\r\n                this.menu.div.focus()\r\n            }\r\n            e.preventDefault()\r\n        }\r\n        else if (this.type === 'checkbox')\r\n        {\r\n            this.checked = !this.checked\r\n            this.closeAll()\r\n        }\r\n        else\r\n        {\r\n            this.closeAll()\r\n        }\r\n\r\n        if (this.click)\r\n        {\r\n            this.click(e, this)\r\n        }\r\n    }\r\n\r\n    get checked()\r\n    {\r\n        return this._checked\r\n    }\r\n    set checked(value)\r\n    {\r\n        this._checked = value\r\n        this.check.innerHTML = this._checked ? '&#10004;' : ''\r\n    }\r\n}\r\n\r\nmodule.exports = MenuItem"]}